Fix incorrect links

Author: jmagak

assemblies/assembly-admin-templates.adoc

@@ -23,4 +23,4 @@ include::modules/templates/proc-adding-templates.adoc[leveloffset=+1]
 [role="_additional-resources"]
 .Additional resources
 * link:{LinkGettingStartedGuide}[Configuring a GitHub App in {product-short}]
-* link:{LinkGettingStartedGuide}[Enabling the GitLab OAuth authentication provider]
+* link:{LinkGettingStartedGuide}[Configuring GitHub authentication]